Automobile jack



Dec. 11, 1923. 1,476,877

V. V. CURTIS l AUTOMOBILE JACK Filed Feb. aj 1923 Patented Dec. 1l,1923.

VAN VINCENT CURTS, OF MOALLEN, TEXAS.

AUTOMOBILE JACK.

Application lcd February 8, 1923.

To all 'whom t may concern:

Be it known that I, VAN V. CURTIS, a citizen of the United States,residing at McAllen, in the county of Hidalgo and State of Texas, haveinvented a new and useful Automobile Jack, of which the following is aspecification.

This invention relates to lifting jacks, and more particularly tolifting jacks especially designed for use in connection'with motorvehicles or the like.

The primary object of the invention is to provide a quick-acting jack,whereby the article being lifted maybe moved to the desired position bya single operation of the lifting lever.

Another object of the invention is to provide a jack which will beautomatically locked in its positions of adjustment.

A still further object of the invention is to provide a jack which maybe folded into a small and compact article to facilitate the storingthereof and permit the same to be carried in the usual tool kit.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and inv the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed, may be made within thescope of what is claimed, without departing from the spirit oftheinvention.

Referring to the drawing:m

Figure l is a vertical sectional view through a jack constructed inaccordance with the present invention, the operating lever being shownin dotted lines in its folded position.

Figure 2 is a sectional view taken on line 2 2 of Figure l.

Referring to the drawing in detail, the reference character 5 designatesthe base of the jack which is formed with a longitudinal central boreprovided with threads indicated at 6.,

The jack also embodies a threaded shaft indicated at 7 adapted to movein the base, the threads of the shaft cooperating with the threads ofthe base to permit of an Serial No. 617,763.

adjustment .of the shaft with respect to the base to raise and lower thesame.

Formed at the upper end of the shaft 7 is a head 8 which is formed witha cut out portion 9 to accommodate the ratchet bar 10 which movestherethrough, the ratchet bar being curved, as clearly shown by Figure lof the drawings and bolted to the lever 1l as at 12. A pivoted pawl isalso supported between the walls of the cut out portion 9 and isdesigned to contact with the teeth of the ratchet bar 10 to hold thelever ll in its positions of adjustment, the pawl being such as toautomatically fall to its active position.

Formed integral with the lever l1 is a depending bearing member 14 whichis also disposed between the walls of the cut out portion 9 andpivotally supported on the pin 15. One end of the lever l1 extendsbeyond the vertical plane of the base 5 and is formed into a curvedsupporting surface 16, the curvature thereof conforming to the curvatureof an axle to embrace a portion of an axle and prevent movement of theaXle with respect to the jack proper.

An extension handle is indicated at 17 and is hingedly connected to thelever 11 so that great leverage of the lever 10 may be had, dueconsideration being given to the compacting of the jack.

In the use of the device, the threaded shaft 7 is rotated, to bring thearticle engaging extremity 16 of the lever 11 into proximity with thearticle to be lifted, whereupon the lever is operated in a manner asdescribed, with the result that the articles engaged by the portion 16of the lever is elevated, the pawl automatically moving to lock thelever in its supporting position.

Having thus described the invention, what is claimed as new is A liftingjack includinga base, a threaded shaft movable through the base andhaving a head, said head having a cut out portion, a lever pivot-allysupported by the head, a curved ratchet bar secured to the lever andmovable between the walls of the out out portion, the ratchet bar havingteeth formed on the upper surface thereof, a pawl pivotally supportedwithin the walls of the eut out portion and disposed above as my own, Ihave hereto affixed my signathe ratlehetf bir) said pawl Yadapted toautoture n the presence of two Witnesses. mat'ca ly a Gravity into entraement With the ratcheis;7 ar to lock theblegver in VAN' VINCENT CURTIS'I its positions of adjustment, and said lever Witnesses: having a curvedarticle engaging extremity. O. L. RAsH,

In testimony that I claim the foregoing R. L. GILMORE.

